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/* packet-quic.h
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 1998 Gerald Combs
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#ifndef __PACKET_QUIC_H__
#define __PACKET_QUIC_H__
#include "ws_symbol_export.h"
#include <glibconfig.h>
#include <wsutil/wsgcrypt.h>
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
/**
* Metadata for a STREAM frame.
* https://tools.ietf.org/html/draft-ietf-quic-transport-23#section-19.8
*/
typedef struct _quic_stream_info {
uint64_t stream_id; /**< 62-bit Stream ID. */
uint64_t stream_offset; /**< 62-bit stream offset. */
uint32_t offset; /**< Offset within the stream (different for reassembled data). */
uint32_t inorder_offset; /**< Offset of the inorder data. */
struct quic_info_data *quic_info; /**< Opaque data structure to find the QUIC session. */
bool from_server;
} quic_stream_info;
/*
* Although the QUIC SCID/DCID length field can store at most 255, v1 limits the
* CID length to 20.
*/
#define QUIC_MAX_CID_LENGTH 20
typedef struct quic_cid {
uint8_t len;
uint8_t cid[QUIC_MAX_CID_LENGTH];
uint8_t reset_token[16];
bool reset_token_set;
uint64_t seq_num;
uint64_t path_id;
} quic_cid_t;
/**
* Obtain Stream Type from a Stream ID.
* https://tools.ietf.org/html/draft-ietf-quic-transport-23#section-2.1
*/
#define QUIC_STREAM_TYPE(stream_id) ((stream_id) & 3U)
#define QUIC_STREAM_CLIENT_BIDI 0
#define QUIC_STREAM_SERVER_BIDI 1
#define QUIC_STREAM_CLIENT_UNI 2
#define QUIC_STREAM_SERVER_UNI 3
/** QUIC Multipath versions; pre draft-07 uses sequence number
* instead of path ID.
*/
#define QUIC_MP_NO_PATH_ID 1
#define QUIC_MP_PATH_ID 2
/** Set/Get protocol-specific data for the QUIC STREAM. */
void quic_stream_add_proto_data(struct _packet_info *pinfo, quic_stream_info *stream_info, void *proto_data);
void *quic_stream_get_proto_data(struct _packet_info *pinfo, quic_stream_info *stream_info);
/** Returns the number of items for quic.connection.number. */
WS_DLL_PUBLIC uint32_t get_quic_connections_count(void);
typedef struct gquic_info_data {
uint8_t version;
bool version_valid;
bool encoding;
uint16_t server_port;
} gquic_info_data_t;
int
dissect_gquic_frame_type(tvbuff_t *tvb, packet_info *pinfo, proto_tree *gquic_tree, unsigned offset, uint8_t len_pkn, gquic_info_data_t *gquic_info);
uint32_t
dissect_gquic_tags(tvbuff_t *tvb, packet_info *pinfo, proto_tree *ft_tree, unsigned offset);
void
quic_add_connection(packet_info *pinfo, quic_cid_t *cid);
void
quic_add_loss_bits(packet_info *pinfo, uint64_t value);
void
quic_add_stateless_reset_token(packet_info *pinfo, tvbuff_t *tvb, int offset, const quic_cid_t *cid);
void
quic_add_multipath(packet_info *pinfo, unsigned version);
void
quic_add_grease_quic_bit(packet_info *pinfo);
void
quic_proto_tree_add_version(tvbuff_t *tvb, proto_tree *tree, int hfindex, unsigned offset);
/**
* Retrieves the QUIC Stream ID which is smaller than or equal to the provided
* ID. If available, sub_stream_id_out will be set and true is returned.
*/
WS_DLL_PUBLIC bool
quic_get_stream_id_le(unsigned streamid, unsigned sub_stream_id, unsigned *sub_stream_id_out);
/**
* Retrieves the QUIC Stream ID which is greater than or equal to the provided
* ID. If available, sub_stream_id_out will be set and true is returned.
*/
WS_DLL_PUBLIC bool
quic_get_stream_id_ge(unsigned streamid, unsigned sub_stream_id, unsigned *sub_stream_id_out);
/**
* Retrieves the initial client DCID from the packet info, if available
*/
WS_DLL_PUBLIC bool
quic_conn_data_get_conn_client_dcid_initial(struct _packet_info *pinfo, quic_cid_t *dcid);
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* __PACKET_QUIC_H__ */
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